Sixty-two office workers in a Swiss federal department were randomly assigned to a training and a control group. While the training group was instructed to complete 3 stochastic resonance whole-body vibration (SR-WBV) exercises every week for 4 weeks, the control group received no treatment. During this time all participants answered a daily questionnaire concerning their surefootedness, sense of balance, musculoskeletal well-being, and muscle relaxation. Before and after the 4-week SR-WBV intervention, balance was tested with a single-leg stance on a foam mat of the Balance Error Scoring System (BESS) using a SwayStar System measuring Total Angle Area (TotAngArea) and Total Velocity Area (TotVelArea). Multilevel results highlighted a significant increase over time for surefootedness and sense of balance (t 2.491, p = 0.016), as well as for musculoskeletal well-being and muscle relaxation (t 2.538, p = 0.014) in the training group but not in the control group. Balance tests showed improvement of balance in the training group (TotAngArea z = 2.550, p = 0.011; TotVelArea z = 3.334, p = 0.001) but not in the control group. SR-WBV exercise indicated a high compliance during this study (3.87 +/- 0.45 trainings per week) underlining its benefits for the working context. Especially office workers who spend most of their time in sitting position could profit from SR-WBV exercise to improve balance and reduce the risk of falls.

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